Prepare against Jachym Nemec
IM · Czechia · World #707 classical · FIDE ID 23716525
When preparing against Jachym Nemec, expect 1.d4 in 68% of White games. Against 1.e4 the reply is 1...c5 (71% of games); against 1.d4, 1...Nf6 (67%). Lowest win rate among frequent openings: Slav Defense as Black, 25.0% over 20 games.
Our database contains 683 games by Jachym Nemec, covering May 2017 to Sep 2026. Below you'll find Jachym Nemec's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Jachym Nemec before a game. You can open the same data in the free interactive preparation workstation, which builds a move-by-move opening tree from every game.
Ratings
| Time control | Current | Peak | Peak date |
|---|---|---|---|
| Classical | 2,483 | 2,483 | Sep 2026 |
| Rapid | 2,380 | 2,380 | Sep 2026 |
| Blitz | 2,354 | 2,364 | Sep 2024 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 683 | 293 | 168 | 222 | 42.9% |
| As White | 342 | 160 | 90 | 92 | 46.8% |
| As Black | 341 | 133 | 78 | 130 | 39.0% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Jachym Nemec's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Jachym Nemec's side.
First moves as White (342 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 233 | 68.1% | 59.0% |
| Nf3 | 59 | 17.3% | 68.6% |
| e4 | 34 | 9.9% | 50.0% |
| c4 | 9 | 2.6% | 61.1% |
| b3 | 7 | 2.0% | 64.3% |
Main lines as White
- 1.d4 — 68% of White games, 59.0% score
- …Nf6 (58% of these games) — Nemec usually continues c4 (58.3% score)
- …d5 (31% of these games) — Nemec usually continues c4 (59.5% score)
- …g6 (3% of these games) — Nemec usually continues e4 (62.5% score)
- 1.Nf3 — 17% of White games, 68.6% score
- …Nf6 (41% of these games) — Nemec usually continues g3 (66.7% score)
- …d5 (39% of these games) — Nemec usually continues g3 (67.6% score)
- …c5 (8% of these games) — Nemec usually continues c4 (83.3% score)
As Black against 1.e4 (167 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 119 | 71.3% | 52.5% |
| c6 | 36 | 21.6% | 45.8% |
| e5 | 8 | 4.8% | 50.0% |
| g6 | 3 | 1.8% | 16.7% |
| Nc6 | 1 | 0.6% | 100.0% |
As Black against 1.d4 (110 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 74 | 67.3% | 63.5% |
| d5 | 35 | 31.8% | 34.3% |
| c5 | 1 | 0.9% | 100.0% |
Jachym Nemec's chess games
All 683 games by Jachym Nemec in the Chess.ceo database (May 2017 - Sep 2026) are free to browse, search and replay: filter by opening, opponent, event or date on the player page, or step through any game on the analysis board. Record: 293 wins, 168 draws, 222 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D35 | Indian Defense | 38 | 18/12/8 | 47.4% |
| A07 | Réti Opening | 35 | 22/6/7 | 62.9% |
| E46 | Nimzo-Indian: Rubinstein System | 27 | 9/9/9 | 33.3% |
| D15 | Slav Defense | 25 | 10/6/9 | 40.0% |
| E04 | Catalan | 16 | 8/5/3 | 50.0% |
| D31 | Queen's Gambit Declined | 15 | 9/5/1 | 60.0% |
| E71 | King's Indian Defense | 14 | 5/4/5 | 35.7% |
| A57 | Benoni Defense | 13 | 7/2/4 | 53.8% |
| E12 | Queen's Indian Defense | 11 | 6/4/1 | 54.5% |
| B06 | Modern Defense | 10 | 5/1/4 | 50.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B50 | Sicilian | 32 | 16/7/9 | 50.0% |
| D35 | Indian Defense | 24 | 12/4/8 | 50.0% |
| B33 | Sicilian: Sveshnikov | 21 | 8/7/6 | 38.1% |
| D45 | Slav Defense | 20 | 5/5/10 | 25.0% |
| B90 | Sicilian: Najdorf | 20 | 9/6/5 | 45.0% |
| B12 | Caro-Kann: Advance Variation | 19 | 5/4/10 | 26.3% |
| B30 | Sicilian: Rossolimo | 16 | 7/2/7 | 43.8% |
| D80 | Grünfeld Defense | 14 | 5/1/8 | 35.7% |
| A13 | English Opening | 13 | 4/3/6 | 30.8% |
| A07 | Réti Opening | 11 | 4/3/4 | 36.4% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jun 2024 | Frederik Svane | 2,638 | 17th Teplice Open | E04 |
| Feb 2025 | Ivan Salgado Lopez | 2,599 | 7th Prague Challengers | E49 |
| Feb 2026 | Jiner Zhu | 2,578 | 8th Prague Challengers | D38 |
| Feb 2026 | Surya Shekhar Ganguly | 2,568 | 8th Prague Challengers | C43 |
| Jul 2024 | Mihail Kobalia | 2,543 | Titled Tue Early | D30 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Titled Tuesday | 2024 | 78 | 42.5 | 2,317 |
| ch-CZE | 2025 | 36 | 18 | 2,356 |
| Mitropa Cup | 2025 | 15 | 9.5 | 2,506 |
| ch-CZE Betsys Online Blitz | 2021 | 13 | 7.5 | 2,164 |
| chT-CZE 2324 | 2024 | 11 | 6.5 | 2,444 |
| 26th ch-EUR Indiv 2026 | 2026 | 11 | 6 | 2,401 |
| 23rd ch-EU | 2023 | 11 | 5.5 | 2,268 |
| 25th ch-EUR Indiv | 2025 | 11 | 5.5 | 2,349 |
Interactive opening tree from all 683 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Jachym Nemec's chess games?
683 games by Jachym Nemec, from May 2017 to Sep 2026, are free to browse and replay move by move — no signup needed. The preparation view groups them into an opening tree showing every line Jachym Nemec has played.
What does Jachym Nemec play on the first move as White?
Across 342 games with White in our database, Jachym Nemec opens with 1.d4 (68% of games), 1.Nf3 (17% of games), 1.e4 (10% of games). Against 1.e4 as Black, Jachym Nemec answers 1...c5 (71% of games), 1...c6 (22% of games), 1...e5 (5% of games). Against 1.d4: 1...Nf6 (67% of games), 1...d5 (32% of games), 1...c5 (1% of games).
What openings does Jachym Nemec play as White?
As White, Jachym Nemec's most-played openings in our database are: Indian Defense (38 games, 47.4% win rate); Réti Opening (35 games, 62.9% win rate); Nimzo-Indian: Rubinstein System (27 games, 33.3% win rate). The full breakdown of 342 games with White is in the table above.
What openings does Jachym Nemec play as Black?
As Black, Jachym Nemec most often plays: Sicilian (32 games, 50.0% win rate); Indian Defense (24 games, 50.0% win rate); Sicilian: Sveshnikov (21 games, 38.1% win rate). See the table above for the top ten Black openings across 341 games.
What is Jachym Nemec's FIDE rating?
Jachym Nemec is currently rated 2,483 in classical chess, 2,380 in rapid and 2,354 in blitz. Peak classical rating: 2,483 (Sep 2026).
How many games has Jachym Nemec played?
Our database contains 683 games by Jachym Nemec, covering May 2017 to Sep 2026. Overall record: 293 wins, 168 draws, 222 losses (42.9% win rate).
How do I prepare against Jachym Nemec?
683 games by Jachym Nemec reveal their opening repertoire, most-played lines, and the variations where they score worst — the raw material for targeted preparation. The interactive opening tree lets you walk every line to any depth.